Hurricane Erin is causing dangerous rip currents and high surf at beaches along the East Coast, and some areas could see coastal flooding over the coming days. The flood risk increases Thursday, when high waves coincide with high tide along the Jersey Shore and New York's south-facing beaches.

All , New York City and Long Island beaches are closed through Aug. 21 as Hurricane Erin makes its way up the Atlantic coast.

High surf and dangerous rip currents are likely. People are advised to stay out of the water this week, even when a lifeguard is on duty.